What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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bobvila.com

https://bobvila.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

bobvila.com

Mobile

Sponsored

Hosting Provider

Automattic, Inc

IP Address

192.0.66.176

Server Location

🇺🇸 San Francisco, United States

ASN

AS2635

Server

Nginx

CDN

Nameservers

ns-2008.awsdns-59.co.uk.ns-208.awsdns-26.com.ns-940.awsdns-53.net.ns-1413.awsdns-48.org.

Performance

Page Speed

2.8 MB

80 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

Automattic, Inc

CDN

Technology Stack

13 Technologies Detected

Plugins

Sailthru Widget Pushly

Libraries

Analytics

CSS Frameworks

Fonts

Tag Managers

Web Servers

Security

SEO Analysis

A88/100

bobvila.combobvila.com

Bob Vila - Home Improvement, Home Repair, & Home Renovation

Inspirational ideas and expert advice from Bob Vila, the most trusted name in home improvement, home renovation, home repair, and DIY.

Title Length59 chars

Recommended: 50-60 chars

Description Length134 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

50 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.02.2026

Valid Until

14.05.2026

Subject Alternative Names (2)

bobvila.comwww.bobvila.com

SHA-256 Fingerprint

70:A8:1E:64:F6:5F:69:64:33:47:FA:72:3D:EA:56:97:A6:7B:9B:3F...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 300s(max-age=300)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 23:56:58 GMT

host-header

a9130478a60e5f9135f765b23f26593b

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx3.googlemail.com

+1 more

Domain Information

bobvila.com

Domain Age

29y 7m

Created

22.07.1996

Expires

21.07.2026

Last Updated

21.06.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

ui-sans-serif

62/100

Readability

/30

24/40

14px · LH 1.29

Hierarchy

/20

8/25

1.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

ui-sans-serif

Sans16px

Body Font

ui-sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

16px

18px

24px

14px

Major Second

Scale

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Cramped layout: 125 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bobvila.com(5)cdn.privacy-mgmt.com(3)googletagmanager.com(2)gstatic.com(1)experiments.parsely.com(1)

Website Identity

bobvila.com

29 years old

NameCheap, Inc.📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram TikTok Pinterest

Sponsored

Last analyzed: 13 Feb 2026 at 23:57

Historical Analysis & Change Tracking